Thread subject: Diptera.info :: Tachinidae - Belida angelicae, male.
Posted by Morten A Mjelde on 09-11-2023 00:42
#1
I guess this Tacinid will be a challenge. Found in forest area, Southern Norway, 7 July.
Edited by Morten A Mjelde on 20-11-2023 19:51
Posted by Morten A Mjelde on 09-11-2023 00:42
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Posted by Morten A Mjelde on 09-11-2023 00:42
#3
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Posted by Morten A Mjelde on 09-11-2023 00:43
#4
Edited by Morten A Mjelde on 09-11-2023 00:47
Posted by Morten A Mjelde on 09-11-2023 00:48
#5
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Posted by Morten A Mjelde on 09-11-2023 00:48
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Posted by Morten A Mjelde on 09-11-2023 00:48
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Posted by Morten A Mjelde on 09-11-2023 00:51
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Posted by Morten A Mjelde on 09-11-2023 00:52
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Posted by John Carr on 09-11-2023 02:28
#10
A late
Phorocera?
Posted by neprisikiski on 09-11-2023 14:15
#11
I think it is not
Phorocera, as it has postpronotal setae in a distinct triangle.
Plesae check for the hairs on the vein R4+5, if there are hairs to the midway of the R-M crossvein, than it could be
Belida angelicae.
Posted by John Carr on 09-11-2023 17:03
#12
neprisikiski wrote:
I think it is not Phorocera, as it has postpronotal setae in a distinct triangle.
Plesae check for the hairs on the vein R4+5, if there are hairs to the midway of the R-M crossvein, than it could be Belida angelicae.
According to the Central European key
Belida has bare eyes and a broader frons (at least 0.71 as wide as an eye). As a member of tribe Blondeliini it should not have a right-angled bend in vein M.
Posted by Morten A Mjelde on 09-11-2023 19:34
#13
Thank you very much John and Erikas!
I think the third antennal segment is too small to be Phorocera obscura...
Morten
Posted by neprisikiski on 10-11-2023 02:24
#14
In the tribe Exoristini postpronotal setae are not arranged in a distinct triangle, therefore I excluded them.
Posted by neprisikiski on 10-11-2023 03:49
#15
You may include just three characters in the interactive key of Cerretti for Exoristinae (1. eye pubescent, 2. postpronotal setae in a triangle and 3. depression on basal syntergite extending on the proximal half) and you will get only three genera:
Istocheta,
Lecanipa and
Ptesiomyia. The first two are Blondeliini with obtuse angle of medial vein, therefore the third one is the most suitable identificaion.
Posted by neprisikiski on 10-11-2023 10:08
#16
Ptesiomyia alacris, to be more precise.
Posted by Morten A Mjelde on 10-11-2023 21:03
#17
Nice! Thanks a lot!
Morten
Posted by Zeegers on 11-11-2023 09:47
#18
but the first supra-alar is short, I’d say that is a no-go.
Habitus is like Belida, costal spine is strong, eye look bare in one pic and hairy in the other, very confusing, apical scutellars are short, …
I still think it is Belida. Vertex is not that broad ….
Theo
Posted by Morten A Mjelde on 11-11-2023 12:47
#19
Thank you, Theo! :)
Morten
Posted by neprisikiski on 11-11-2023 13:51
#20
I also had doabts about
Ptesiomyia, but Morten has ignored my first question about the bristles on the vein R4+5, so could you answer please? Hairs on the eyes seems rather short to be treated as clearly pubescent.
Posted by Zeegers on 11-11-2023 16:00
#21
I just checked my collection. Belida has short hairs on the eye ….
Posted by Morten A Mjelde on 12-11-2023 17:29
#22
Hi Erikas! Sorry I didn't answer your question. I didn't mean to ignore you, but I thought it was irrelevant with regard to John's next response. I have now checked R 4+5 but I can't see any hair.
And Theo - thanks for checking out your collection.
Morten
Posted by Morten A Mjelde on 20-11-2023 19:50
#23
I sent the fly to a Swedish expert on parasitic flies, Christer Bergström, and it was determined to be Belida angelicae.
Morten